Compass



INVENTOR ATT F. WEST. JR

. COMPASS Filed Feb. 11, 1936 Nov. 10, 1936.

Patented Nov. 10, 1936 C OMIASS Francis West, In, Chilmarks, Masa, minorto Paul Zuckerman, New York, N. Y.

Application February 11, 1936, Serial No. 63,292

Claims. (Cl. 33-222) This invention relates to compasses and moreparticularly to so-called parallel reading compasses in which theconventional compass card is eliminated and use is made of markers soarsupported by a pivot l2 upon a suitable standard J3 for swingingmovement thereon under the influence of the earths magnetic field. ASouth indicating rod or needle [4 extends outwardly from the supportingframe i l in the opposite direction from the North indicating needle I0, and East and West indicating needles l5 and I6, respectively,

extend outwardly at right angles thereto.

Suitable members or markers are mounted illustrated, the Northindicating needle Ill and associated rods I! are given a distinctivecolor such, for example, as red, which differs from the color of theremaining pointers and rods which may, for example, be white, or, ifdesired, that,

ranged as to indicate that the correct course is within thebowl so as tobe in parallel with the 5 being steered when the magnetic element ornee- North indicating needle when the desired course is die is paralleltherewith. Heretofore, compasses being steered, and be out of paralleltherewith if of this type have been limited to those having flat thewrong course is being steered. As a result, a top bowls, such as bowlsof cylindrical shape, brief glance at the compass to determine if thewith the parallel markers formed by grid wires needleis inparallel withthe cooperating markers positioned over the fiat tops of the bowls. Suchis suflicient to determine whether or not the -an arrangement can not beemployed for spherical proper course is being followed. As hereinafterbowl compasses because the curvature of the described, the position ofthe markers is set in bowl top destroys the parallelism of the markersaccordance with the course to be steered. or lines except when viewedfrom directly 'over- As illustrated, these members are formed by a head.pair of small rods H which are secured to the 'An object of thisinvention is to provide a lower metallic hemisphere 6 and extendinwardly parallel reading mechanism constructed and artoward the centerof the compass bowl, preferably ranged for use with spherical bowlcompasses as at a plane below the plane of the North seeking well aswith other types. element. The rods are parallel and preferably This andother objects which will be apparent are so spaced as to lie on oppositesides of a verto those skilled in this particular art are accomticalplane passing through the needle Ill. In the plished by means of thepresent invention, one illustrated embodiment, similar pairs of smallrods embodiment of which is illustrated in the accoml8 are arranged tocooperate with the South indi- P y d ing in which, eating needle I4while rods [9 cooperate with the Fig. 1 is a perspective view of aspherical bowl East indicating needle l5, and rods 20 with the compassprovided with parallel reading mech- West indicating needle l6. anismconstructed in accordance with one em- The compass bowl is mountedin aframe 2| bodiment of this invention. supported upon a cushion base 22,and the as- Fi 2 is a p plan V w f he mp wn sembly may be mounted in anyconventional comin Fig. 1, and pass support, not shown. The frame 2| hasan Fig. 3 is a transverse sectional view of the comindex 23 cooperatingwith the degrees marked on Bass 0 the line 3 of t Supp t the azimuthring 8. It will, of course, be apparent vframe being omitted. that theazimuth ring can be provided with con- As illustrated, the invention isshown in connecventional compass markings if desired in place of tionwith a spherical bowl compass of well known th scale of degrees,construction. 'The spherical bowl is formed with In operation -t compassb 1 ith it azian upper glass hemisphere 5 and a lower metallic muth n rrotatably adjusted in the frame 2 hemisphere 5 with which is cohhfactedthe in accordance with the direction which is to be sioh chamber 7phrhht ejfp-ahsloh and f steered, and the correct course is followed byso 40 tion of the m wlth when the l 1s fined steering as to maintain theneedles of the mag- The two henhspheres are Stalled Permanently neticelement in parallel with the associated gather m the present lanventlpnan azlmutb parallel rods. It will be apparent from Figs. 1 ring 8,hav1ngthe usual 360 markings thereon, is and 2 that a glance only will sumceto tell a secured to the bowl as a part thereof over a sup- 5 portingflange 5 which is joined to the edge of the namgawr if the crrect coutsebeing steered lower hemisphere To simplifyreading the compass, when themag- I The magnetic element includes a North indif elemenffi providedwlth more than the eating element in the form of a rod or needle inSmgle North 'f h needle m u for extending outwardly from a supportingfram ample, as the additional needles I4, I 5 and I 6, 5o

North indicating needle may be given some distinctive shape.

When a change in course is to be made, the compass bowl and associatedazimuth ring. are rotatably adjusted in its frame until the degreeindicating the desired course is positioned opposite the index 23. Thecourse is then followed 7 by so steering as'to maintain the properparallelism between the needles of the magnetic element and the parallelrods.

' The invention can be variously modified and adapted within the scopeof the appended claims.

I claim:

i. A compass having a bowl, 9. North indicating needle supported in saidbowl, an elongated member located within said bowl and extendingalongside said needle in position to cooperate therewith to indicate apredetermined'course when said needle is in parallel with said member,and means for adi'ustably supporting-said bowl whereby the positionofsaid member can be set in accordance with a predetermined course.

2. A compass having a spherical bowl, a magnetic element supportedinsaid bowl including 4 a North indicating needle, a member supported onthe wall ofsaid bowl and extending inwardly thereof in pcuition tocooperate with said needle to indicate a predetermined course when saidneedle is in parallel with said member, and means for rotatablysupporting said bowl whereby 'the ber 10, 1936. Disclaimer filed JuneHereb enters this disclaimer of claims 1,- Gazette June 2?, 1939.]

position of said member can'be set in accordance with a predeterminedcourse.

3. A compass having a spherical bowl, an azi-' muth ring secured to saidbowl, a North indicating element supported in said bowl, a rod mountedin said bowl and extending inwardly adjacent said element in position tocooperate therewith to indicate a predetermined course when said elementis in parallel with said rod, and a frame for rotatably supportingsaidbowl and azimuth ring whereby the position of said rod can be set inaccordance with the course to be steered. I

4. A compass having a bowl, a direction indicating needle mounted withinsaid bowl, parallel rods located within said bowl on opposite sides ofsaid needle to cooperate therewith for indicating a predetermined coursewhen said needle is in parallel with said rods, and means for settingthe position of said rods in accordance with the course to be steered.

5. A compass having a bowl, a direction indicating needle located withinsaid bowl, parallel rods supported in said bowl and located on oppositesides of said needle to cooperate therewith for indicating apredetermined course when said needle is in parallel with said rods, anazimuth ring associated with said bowl, and means for adjustablysupporting said bowl so that the positions of said rods can be set inaccordance with the course to be steered.

' FRANCIS WEST. Js.

Patent dated Novem- 6, 1939, by the patentee.-

4, and 5 of said Letters Patent.

North indicating needle may be given some distinctive shape.

When a change in course is to be made, the compass bowl and associatedazimuth ring. are rotatably adjusted in its frame until the degreeindicating the desired course is positioned opposite the index 23. Thecourse is then followed 7 by so steering as'to maintain the properparallelism between the needles of the magnetic element and the parallelrods.

' The invention can be variously modified and adapted within the scopeof the appended claims.

I claim:

i. A compass having a bowl, 9. North indicating needle supported in saidbowl, an elongated member located within said bowl and extendingalongside said needle in position to cooperate therewith to indicate apredetermined'course when said needle is in parallel with said member,and means for adi'ustably supporting-said bowl whereby the positionofsaid member can be set in accordance with a predetermined course.

2. A compass having a spherical bowl, a magnetic element supportedinsaid bowl including 4 a North indicating needle, a member supported onthe wall ofsaid bowl and extending inwardly thereof in pcuition tocooperate with said needle to indicate a predetermined course when saidneedle is in parallel with said member, and means for rotatablysupporting said bowl whereby 'the ber 10, 1936. Disclaimer filed JuneHereb enters this disclaimer of claims 1,- Gazette June 2?, 1939.]

position of said member can'be set in accordance with a predeterminedcourse.

3. A compass having a spherical bowl, an azi-' muth ring secured to saidbowl, a North indicating element supported in said bowl, a rod mountedin said bowl and extending inwardly adjacent said element in position tocooperate therewith to indicate a predetermined course when said elementis in parallel with said rod, and a frame for rotatably supportingsaidbowl and azimuth ring whereby the position of said rod can be set inaccordance with the course to be steered. I

4. A compass having a bowl, a direction indicating needle mounted withinsaid bowl, parallel rods located within said bowl on opposite sides ofsaid needle to cooperate therewith for indicating a predetermined coursewhen said needle is in parallel with said rods, and means for settingthe position of said rods in accordance with the course to be steered.

5. A compass having a bowl, a direction indicating needle located withinsaid bowl, parallel rods supported in said bowl and located on oppositesides of said needle to cooperate therewith for indicating apredetermined course when said needle is in parallel with said rods, anazimuth ring associated with said bowl, and means for adjustablysupporting said bowl so that the positions of said rods can be set inaccordance with the course to be steered.

' FRANCIS WEST. Js.

Patent dated Novem- 6, 1939, by the patentee.-

4, and 5 of said Letters Patent.

